JP4822884B2 - Server apparatus, recording medium abnormality detection method and recording medium abnormality detection program - Google Patents

Description

  The present invention relates to a server device that records or reproduces broadcast material data in a broadcasting station, a recording medium abnormality detection method thereof, and a recording medium abnormality detection program.

  As is well known, in a broadcasting station, for example, broadcast program data such as television broadcast and radio broadcast programs, CM (commercial), text and data programs are stored on the disk, and broadcast from the disk at an arbitrary timing. A video server for reproducing program data is used.

  By the way, since such a video server needs to operate continuously for 24 hours without stopping, if the disk access is stopped due to a disk failure or the like, it becomes a very big problem.

Conventionally, a check code is generated from a recording data sequence and a reproduction data sequence to a disc, and the value of this check code is compared with a predetermined value to detect a malfunction of the device and access the disc. There has been proposed a method for taking a countermeasure for stopping (for example, Patent Document 1).
JP 2001-84589 A

  However, in the above-described method, the check code generation process, the device malfunction detection process, and the like are executed by the video server. Therefore, when the broadcast program data is recorded or reproduced, the check code generation is performed. If processing, detection of malfunction of the apparatus, or the like is performed, the broadcast program data may be recorded or reproduced.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a server device capable of inspecting a recording medium connected in the background at a specified time even when the apparatus is in operation, a recording medium abnormality detection method, and a recording medium abnormality detection program. There is.

In order to achieve the above object, the present invention is configured as follows.
Broadcast material data is recorded on a recording medium having a block structure at a rate corresponding to at least a part of transmission bands predetermined by the recording unit, and the broadcast material data recorded on the recording medium is recorded by the reproducing unit. A detecting device for scanning the recording medium by sequentially accessing a plurality of blocks of the recording medium and reading the data in the server device for reading and outputting at a rate, and detecting the presence or absence of the reading data in units of blocks during the scanning; First data reading for each unit length block obtained by dividing a plurality of blocks of the recording medium by a first time length, and data read until a second time different from the first time elapses after the first processing Control means for causing the detection means to repeatedly execute the second process for stopping the process within a specified time is provided.

  According to this configuration, the first process of detecting the presence / absence of abnormality of the data of the unit length block is executed at the first time within the designated time for checking the abnormality of the block of the entire recording medium, and the first time After the elapse of time, the second process of stopping the reading process of the unit length block data from the recording medium for the second time is executed, and the first and second processes are repeatedly executed until the designated time is reached. ing. In other words, it is possible to inspect the block abnormality of the entire recording medium using the free band in the transmission band.

  Therefore, during recording or reproduction of broadcast material data on the recording medium, the transmission band is not occupied by the abnormality detection processing of each block of the recording medium, thereby preventing the abnormality of the blocks of the recording medium connected in the background. It can always be detected, and the failure of the recording medium can be detected at an early stage.

  An abnormality notifying means for notifying the outside of the abnormality when the detecting means detects an abnormality of the read data is further provided.

  According to this configuration, the operator can immediately know that there is an abnormality in the recording medium, and thus, it is possible to quickly take a countermeasure such as a recovery operation.

  As described above in detail, according to the present invention, a server device capable of inspecting a recording medium connected in the background at a specified time even during operation of the apparatus, a recording medium abnormality detection method, and a recording medium abnormality detection A program can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing an embodiment of a video server system according to the present invention.

  This system comprises a video server 11 and a storage device 12 comprising an HDD (Hard Disk Drive). Here, in order to simplify the description, the number of input channels (systems) and the number of output channels of the video server 11 are each assumed to be one channel.

  In this embodiment, an encoder (ENC) 13 is connected to the input channel of the video server 11, and a decoder (DEC) 14 is connected to the output channel. In addition, a VTR (Video Tape Recorder) 15 is connected to the encoder 13.

  Broadcast material data generated from the VTR 15 is encoded by the encoder 13 in accordance with the MPEG2 (Moving Picture Experts Group 2) encoding method, and then recorded in an appropriate area of the storage device 12 by the video server 11.

  The video server 11 manages the broadcast material encoded data recorded in the storage device 12, and in response to the reproduction instruction input, the broadcast server encoded data is stored in a predetermined transmission band within a predetermined transmission band. The data is read out at a transmission rate corresponding to the bandwidth. The read broadcast material encoded data is decoded by the decoder 14 and returned to the original broadcast material data.

  By the way, in this embodiment, the video server 11 is provided with a monitoring unit 111, a monitoring control unit 112, and an abnormality notification unit 113. The monitoring unit 111 always scans the entire block of the recording device 12 by sequentially accessing a plurality of blocks of the storage device 12 and reading out the data, and detects whether there is an abnormality in the read data in units of blocks during this scan. If there is an abnormal block in the storage device 12, the data of the block cannot be read or becomes abnormal data, so that it can be detected as an abnormal block.

  The monitoring control unit 112 performs a first process for reading data from the storage device 12 for each read size and a second process for stopping the data read process until 1 second has elapsed after the first process. The monitoring unit 111 is repeatedly executed.

  The abnormality notification unit 113 notifies the outside of the abnormality when the monitoring unit 111 detects an abnormality in the read data.

Next, the operation of the above configuration will be described below.
As shown in FIG. 2, the storage device 12 is composed of a plurality of recording blocks. In FIG. 2, the hatched portion indicates an abnormal block. These plurality of recording blocks may include abnormal blocks. In this case, the video server 11 reads out the data of the abnormal block and detects whether it is abnormal. The video server 11 concentrates the abnormal block on a specific address and sets a flag. It is possible not to access the address of the flag.

  However, when an abnormal block is detected in the storage device 12, it cannot be performed during recording or reproduction of the broadcast material data, and there has been only a method of performing it during a pause.

  Therefore, in this embodiment, as shown in FIG. 3, an abnormal block detection process of the storage device 12 is performed using a vacant transmission band used for recording or reproducing broadcast material data. Yes.

FIG. 4 is a flowchart showing a control processing procedure of the video server 11 when executing the detection processing.
First, the video server 11 performs an initial setting (starting from the upper left recording block in FIG. 2) to start scanning the recording block of the storage device 12 (step ST4a), and calculates the read size according to the following equation (step ST4a). Step ST4b).

Read size = (size of the entire disk−size read so far) / (time for reading the entire disk−time taken so far)
Subsequently, the video server 11 accesses the storage device 12 with the obtained read size and reads data (step ST4c), and determines whether there is abnormal data in units of recording blocks (step ST4d). Here, when there is abnormal data (Yes), the video server 11 notifies the outside of an error (step ST4e).

  On the other hand, when there is no abnormal data (No), the video server 11 stops the access to the storage device 12 for 1 second (step ST4f). Then, the video server 11 determines whether or not the designated time has been reached (step ST4g), and sequentially changes the read start position of the recording block to the storage device 12 until the designated time is reached (step ST4h). Steps ST4b to ST4f are repeatedly executed.

  When the designated time is reached (Yes), the video server 11 ends the access process to the storage device 12. If the video server 11 does not end within the designated time, the video server 11 continues until the entire storage device 12 has been inspected.

  As described above, in the above-described embodiment, the video server 11 detects whether there is an abnormality in the read size data obtained from the past reading history within the specified time for checking the recording block abnormality of the entire storage device 12. After the process is completed, a process of stopping for 1 second is executed, and these processes are repeatedly executed until a specified time is reached. In other words, it is possible to check for abnormalities in the recording blocks of the entire storage device 12 using a free band in the transmission band.

  Accordingly, during the recording or reproduction of the broadcast material data to or from the storage device 12, the transmission band is not occupied by the abnormality detection process of each recording block of the storage device 12, thereby the storage device 12 connected in the background. Abnormalities in the recording block can always be detected, leading to early detection of a failure in the storage device 12.

  In the above embodiment, when an abnormality is detected in the read data, the fact that the abnormality is detected is notified to the outside, so that the operator nearby has an abnormality in the recording block of the storage device 12. Thus, it is possible to immediately take countermeasures such as a recovery operation.

  Note that the processing of each of the monitoring unit 111, the monitoring control unit 112, and the abnormality notification unit 113 described in the above embodiment can be software processed by a computer program. In this case, it can be realized simply by installing a computer program for executing the processes of the monitoring unit 111, the monitoring control unit 112, and the abnormality notification unit 113 in the video server 11. The installation method may be performed through a recording medium or a communication network.

  In the above embodiment, the read size for the storage device 12 is obtained using the past read history. However, if an available bandwidth can be used, the read size can be set even for other than the past read history. Can be sought. Further, the reading stop time may be other than 1 second.

  In addition, the configuration of the video server system, the function and type of the video server, the type of storage device, the inspection method of the storage device, and the like can be variously modified and implemented without departing from the gist of the present invention.

1 is a schematic configuration diagram showing an embodiment of a video server system according to the present invention. FIG. 2 is a diagram showing a recording block structure of the storage device shown in FIG. 1. In the same embodiment, the band characteristic figure which shows the zone | band used for the scanning of a memory | storage device. 4 is a flowchart showing a control processing procedure of the video server when executing abnormality detection processing of the storage device in the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Video server, 12 ... Memory | storage device, 13 ... Encoder, 14 ... Decoder, 15 ... VTR (Video Tape Recorder), 111 ... Monitoring part, 112 ... Monitoring control part, 113 ... Abnormality notification part

Claims (9)

Broadcast material data is recorded on a recording medium having a block structure at a rate corresponding to at least a part of transmission bands predetermined by the recording unit, and the broadcast material data recorded on the recording medium is recorded by the reproducing unit. In the server device that reads out and outputs at the rate,
Detection means for scanning the recording medium by sequentially accessing a plurality of blocks of the recording medium at all times and reading the data, and detecting the presence or absence of read data in units of the blocks during the scanning;
A first process of reading data for each unit length block obtained by dividing a plurality of blocks of the recording medium by a first time length, and the data until a second time different from the first time elapses after the first process. And a control unit that causes the detection unit to repeatedly execute a second process for stopping the reading process in a specified time.   The control means sets the data size of the unit length block to be read from the recording medium as follows: (total size of the recording medium−size read in the past) / (time for reading data of the entire recording medium−time required for reading past data) The server device according to claim 1, wherein the server device is obtained by:   2. The server apparatus according to claim 1, further comprising an abnormality notifying unit for notifying the outside of an abnormality when an abnormality of read data is detected by the detecting unit. Broadcast material data is recorded on a recording medium having a block structure at a rate corresponding to at least a part of transmission bands predetermined by the recording unit, and the broadcast material data recorded on the recording medium is recorded by the reproducing unit. In the recording medium abnormality detection method used in the server device that reads and outputs at the rate,
A first step of reading data for each unit length block obtained by dividing a plurality of blocks of the recording medium by a first time length, and detecting the presence or absence of abnormality of the read data;
A second step of stopping the data reading process until a second time different from the first time elapses after the first process;
And a third process for repeatedly executing the first and second processes within a specified time.   In the first step, the data size of the unit length block to be read from the recording medium is calculated as follows: (total size of the recording medium−size read in the past) / (time for reading data in the entire recording medium−reading of the past data) 5. The recording medium abnormality detection method according to claim 4, wherein the recording medium abnormality detection method is obtained by:   5. The recording medium abnormality detection method according to claim 4, further comprising a fourth step of notifying the outside of an abnormality when an abnormality of read data is detected in the first step. Broadcast material data is recorded on a recording medium having a block structure at a rate corresponding to at least a part of transmission bands predetermined by the recording unit, and the broadcast material data recorded on the recording medium is recorded by the reproducing unit. In the recording medium abnormality detection program used in the server device that reads and outputs at the rate,
A first step of reading data for each unit length block obtained by dividing a plurality of blocks of the recording medium by a first time length, and detecting the presence or absence of abnormality of the read data;
A second step of stopping the data reading process until a second time different from the first time elapses after the first process;
And a third step of repeatedly executing the first and second steps within a specified time.   In the first step, the data size of the unit length block to be read from the recording medium is calculated as (total size of the recording medium−size read in the past) / (time for reading data in the entire recording medium−required for reading the past data. The recording medium abnormality detection program according to claim 7, wherein the recording medium abnormality detection program is obtained by:   8. The recording medium abnormality detection program according to claim 7, further comprising a fourth step of notifying the outside of an abnormality when an abnormality of read data is detected in the first step.

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